time.cpp

// NOTE: it is recommended to use this even if you don't understand the following code.

#include <iostream>
#include <fstream>

using namespace std;

int main() {
//  uncomment the following lines if you want to read/write from files
//  ifstream cin("input.txt");
//  ofstream cout("output.txt");

	int H0, M0, H1, M1;

    cin >> H0 >> M0;
	cin >> H1 >> M1;
    
    // insert your code here
    int H=0, M=0;
	
	if (M1 >= M0) {
		M = M1 - M0;
	} else {
		M = 60 - (M0 - M1);
		H1 --;
	}
	
	if (H0 <= 23 && H0 != 0) {
		H = H1 + (24-H0);
	} else {
		H = H1 - H0;
	}
	
	if (H < 0) {
		H += 24;
	} else if (H >= 24) {
		H -= 24;
	}
	
    cout << H << " " << M << endl; // print the result
    return 0;
}